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' J. B. 85 O. B. JOHNSON.

BALING PRESS. v No. 362,280. Patented May 3, 1887.

WITNESSES. C,

N PEIERS. PholoLikhugnpMr, wmin mn, n. c.

UNITED STATES PATENT OFFICE.

JESSE B. JOHNSON AND OSCAR B. JOHNSON, OF INDIANAPOLIS, INDIANA.

BALlNG-PRESS.

SPECIFICATION forming part. of Letters Patent No. 362,280, dated May 3, 1887.

Application filed September 17, 1686. Serial No. 213,788.

T0 at whom it may concern:

Be it known that we, J EssE B. JoHNsoN and OSCAR B. J 0HNs0N,of the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Baling-Presses, of which the following is a specification.

The object of our presentinvention is to provide a means for automatically raising the trap-door which covers the orifice in the press into which the material is introduced before being subjected to pressure. This object is accomplished by a system of links and levers con-.

nected to a latch onsaid door and to the framework, and an arm which comes in contact with and operates said links and levers, and thus disengages the latch and raises the door at the proper time, as will be hereinafter more particularly described and claimed.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure 1,is a top or plan view of so much of a press as includes the operating mechanism and the trap-door; Fig. 2, a central vertical section of the same on the dotted line 2 2in Fig. 1; and Fig. 3, a perspective view of the trap-door and latch, the side of the press being broken away to show the latch more clearly.

In said drawings, the portions marked A represent the frame-work of the press; B, the shaftby which, through suitable gearing, the plunger or press-head is driven; G, the trapdoor to the press; D, the latch thereto; and E, a lever by which, in connection with the links and rods which will be presently de scribed, said latch and door are operated.

The frame A is the frame-work of any ordinary or desired press, andcarries the mechanism and press structure. I

The shaft B is preferably the shaft upon which is the device which engages directly with the plunger. Secured to said shaft upon the side of said engaging device, or to any suitable hub on said shaft, is an arm, I), which engages with a contact-point, e, on the links which operate the latch and trapdoor, said contact-point being preferably, as shown, in the form of an anti-friction roller. This arm I) may, if desired, be secured to the plunger in- (No model.)

In front of this door, se-

cured in thepress structure,is a beveled 1atchstrike, a, with which the engaging points of the latch D come in contact'as the door is closed,and which serve to force back said latch until said points reach the orifices in said strike into which they are to enter. Secured to said trap-door also is the stop C,which prevents it from being forced down too far when it is closed.

The latch D is a double latch having two points of engagement, one near each side of the door, and is secured to said door by clips (I. A spring-actuated operating-rod, D, is connected to this latch at one end, and passes back through aclip,(l,at the other. The spring D thereon serves to hold said rod and thelatch forward, so that said latch will be held into engagement, except when forcibly pulled back. Upon each side of each of the rear clips, d, in the the latch D, is apin or stop, d,which limits the movement of said latch in either direc' tion, and thus prevents the points of said latch from projecting too far when the spring D is at liberty to act and also prevents said latch from being drawn too far back by the opera tion of the levers and links.

The lever E is pivoted to the frame-work or press structure by a pivot, c. It is connected to the sliding bar D by a rod or link, E, and to a swinging link, E, by a link, E At the junction of these two links E and E the contact-point or anti-friction roller 6 is located, as shown most plainly in Fig. 2.

The operation is as follows: The door being closed down and the several parts in the position shown in the full lines in Fig. 2, and the shaft B or other moving part carrying the arm I) being put in motion,said arm 11 comes in contact with the anti-friction truck e, and forces the several links, levers, and trap-door into the position shown by the dotted lines in said Fig. 2. The first operation, as this arm begins to force said anti-friction roller or contact-point and the parts connected thereto rearwardly, is to withdraw the points of the latch out of engagement with the strike a, drawing said latch backwardly until the pins or stops (Z come in contact with the front side of the rear clips, d. The movement continu ing, the trap-door is then raised,as shown, and as will be readily understood.

The lever E is provided with a handle, as shown, by which, when it is desired to throw the trap-door down, it can be done by hand. The force upon the rod D having been released bythe passage of the arm 1) past the contactpoint or anti-friction roller 6, the spring D iorces said rod D, and with it the latch D, forward until the pins or stops d on the rear side of the clips (1 come in contact with said clips, and the latch is then ready for re-engagement when the door is shut. As will be seen, by a proper arrangement of the arm I) on a moving part the trapdoor can at any desired period of the operation of the press be automatically unlatched and raised up, thus giving the persons engaged in filling the press the longest possible time in which to do their work.

Having thus fully described our said invention, what we claim as new, and desire to secure by Letters Patent, is

The combination, in a press, of a moving portion, the trap-door, a latch, D, on said door, a spring-operated rod connected to said latch, a lever, E, connected by a link to said springoperated rod and to a swinging link by another link, and a contact-point with which an arm on said moving part will come in contact and operate said latch and door through said links and levers.

In witness whereof we have hereunto set our hands and seals, at Indianapolis, Indiana, this 14th day of September, A. D. 1886.

JESSE l3. JOHNSON. L. s] OSCAR B. JOHNSON. L. s]

In presence oi E. W. BRADFORD, CHARLES L. THURBER. 

